I wouldn't even confine it to RPGs - I like games in general. I count myself as a Gamer, period.
There are lots of games - many of them roleplaying games - that I like. The group that I have gamed with for years have roleplayed using several versions of D&D (including a rebuilt-from-the-ground-up "D&D" written while at university), DragonQuest, Traveller, Star Wars, Bushido, Call of Cthulhu, HârnMaster, GURPS, World of Darkness (with modified Theatrix rules, because the WoD rules suck boulders), Pulp Action vs the Nazis, Talislanta, Arabian Nights inspired RuneQuest III and more besides. We vary GM, play focus and system all the time - variety, as they say, is the life of space...